BASIS OF PRESENTATION AND SIGNIFICANT EVENTS (Details) - USD ($)	Jul. 02, 2015	Aug. 02, 2016
Business Acquisition [Line Items]
Maximum dividend allowed prior to merger	$ 0.29
Agreement and Plan of Merger with Aetna Inc.
Business Acquisition [Line Items]
Number of shares one share of common stock is converted into	0.8375
Cash received for each share converted	$ 125
Total transaction cost, including assumption of debt	$ 37,000,000,000
Subsequent Event | Medicare Advantage Assets | Molina Healthcare | U.S. Department Of Justice vs. Humana and Aetna
Business Acquisition [Line Items]
Sale price		$ 117,000,000